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Flush zrtp cache automatically 

Add option to flush zrtp cache to persistent storage automatically
immediately after the cache is modified. See
zrtp_config_t#cache_auto_store.

Modified-by: Travis Cross <tc@traviscross.com>
Signed-off-by: Travis Cross <tc@traviscross.com>
This commit is contained in:
Viktor Krykun 2012-06-15 10:23:13 +03:00 committed by Travis Cross
parent 551938b89b
commit e4daefbadc
3 changed files with 27 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
libs/libzrtp/include/zrtp.h
View File

@ -161,6 +161,17 @@ typedef struct zrtp_config_t
/** @brief Path to zrtp cache file (set if you use built-in realization) */
zrtp_string256_t def_cache_path;
/**
* @brief Flush the cache automatically
* Set to 1 if you want libzrtp to flush the cache to the persistent storage
* right after it is modified. If cache_auto_store is 0, libzrtp will flush
* the cache on going down only and the app is responsible for storing the
* cache in unexpected situations. Enabled by default.
*
* @sa zrtp_def_cache_store()
*/
unsigned cache_auto_store;
} zrtp_config_t;
/**

3
libs/libzrtp/src/zrtp.c
View File

@ -34,6 +34,8 @@ void zrtp_config_defaults(zrtp_config_t* config)
ZSTR_SET_EMPTY(config->def_cache_path);
zrtp_zstrncpyc(ZSTR_GV(config->def_cache_path), "./zrtp_def_cache_path.dat", 25);
config->cache_auto_store = 1; /* cache auto flushing should be enabled by default */
#if (defined(ZRTP_USE_BUILTIN_CACHE) && (ZRTP_USE_BUILTIN_CACHE == 1))
config->cb.cache_cb.on_init = zrtp_def_cache_init;
config->cb.cache_cb.on_down = zrtp_def_cache_down;
@ -81,6 +83,7 @@ zrtp_status_t zrtp_init(zrtp_config_t* config, zrtp_global_t** zrtp)
ZSTR_SET_EMPTY(new_zrtp->def_cache_path);
zrtp_zstrcpy(ZSTR_GV(new_zrtp->def_cache_path), ZSTR_GV(config->def_cache_path));
zrtp_memcpy(&new_zrtp->cb, &config->cb, sizeof(zrtp_callback_t));
new_zrtp->cache_auto_store = config->cache_auto_store;
ZSTR_SET_EMPTY(new_zrtp->client_id);
zrtp_memset(new_zrtp->client_id.buffer, ' ', sizeof(zrtp_client_id_t));

14
libs/libzrtp/src/zrtp_iface_cache.c
View File

@ -82,7 +82,9 @@ void zrtp_def_cache_down()
if (inited) {
mlist_t *node = NULL, *tmp = NULL;
zrtp_cache_user_down();
/* If automatic cache flushing enabled we don't need to store it in a disk as it should be already in sync. */
if (!zrtp->cache_auto_store)
zrtp_cache_user_down();
mlist_for_each_safe(node, tmp, &cache_head) {
zrtp_sys_free(mlist_get_struct(zrtp_cache_elem_t, _mlist, node));
@ -119,6 +121,8 @@ zrtp_status_t zrtp_def_cache_set_verified( const zrtp_stringn_t* one_ZID,
}
zrtp_mutex_unlock(def_cache_protector);
if (zrtp->cache_auto_store) zrtp_def_cache_store(zrtp);
return (new_elem) ? zrtp_status_ok : zrtp_status_fail;
}
@ -211,6 +215,8 @@ static zrtp_status_t cache_put( const zrtp_stringn_t* one_ZID,
} while (0);
zrtp_mutex_unlock(def_cache_protector);
if (zrtp->cache_auto_store) zrtp_def_cache_store(zrtp);
return (new_elem) ? zrtp_status_ok : zrtp_status_fail;
}
@ -304,6 +310,8 @@ zrtp_status_t zrtp_def_cache_set_presh_counter( const zrtp_stringn_t* one_zid,
}
zrtp_mutex_unlock(def_cache_protector);
if (zrtp->cache_auto_store) zrtp_def_cache_store(zrtp);
return (new_elem) ? zrtp_status_ok : zrtp_status_fail;
}
@ -783,6 +791,8 @@ static zrtp_status_t put_name( const zrtp_stringn_t* one_ZID,
} while (0);
zrtp_mutex_unlock(def_cache_protector);
if (zrtp->cache_auto_store) zrtp_def_cache_store(zrtp);
return s;
}
@ -872,6 +882,8 @@ zrtp_status_t zrtp_def_cache_reset_since( const zrtp_stringn_t* one_zid,
}
zrtp_mutex_unlock(def_cache_protector);
if (zrtp->cache_auto_store) zrtp_def_cache_store(zrtp);
return (new_elem) ? zrtp_status_ok : zrtp_status_fail;
}